Low-mass dark matter search using ionization signals in XENON100

XENON Collaboration

    Research output: Contribution to journalArticle

    Abstract

    We perform a low-mass dark matter search using an exposure of 30 kg×yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 keV for nuclear recoils. No dark matter detection can be claimed because a complete background model cannot be constructed without a primary scintillation signal. Instead, we compute an upper limit on the WIMP-nucleon scattering cross section under the assumption that every event passing our selection criteria could be a signal event. Using an energy interval from 0.7 keV to 9.1 keV, we derive a limit on the spin-independent WIMP-nucleon cross section that excludes WIMPs with a mass of 6 GeV/c2 above 1.4×10-41 cm2 at 90% confidence level.

    Original languageEnglish (US)
    Article number092001
    JournalPhysical Review D
    Volume94
    Issue number9
    DOIs
    StatePublished - Nov 3 2016

    Fingerprint

    weakly interacting massive particles
    dark matter
    ionization
    scintillation
    scattering cross sections
    energy
    confidence
    intervals
    requirements
    thresholds
    detectors
    cross sections
    interactions

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Low-mass dark matter search using ionization signals in XENON100. / XENON Collaboration.

    In: Physical Review D, Vol. 94, No. 9, 092001, 03.11.2016.

    Research output: Contribution to journalArticle

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    abstract = "We perform a low-mass dark matter search using an exposure of 30 kg×yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 keV for nuclear recoils. No dark matter detection can be claimed because a complete background model cannot be constructed without a primary scintillation signal. Instead, we compute an upper limit on the WIMP-nucleon scattering cross section under the assumption that every event passing our selection criteria could be a signal event. Using an energy interval from 0.7 keV to 9.1 keV, we derive a limit on the spin-independent WIMP-nucleon cross section that excludes WIMPs with a mass of 6 GeV/c2 above 1.4×10-41 cm2 at 90{\%} confidence level.",
    author = "{XENON Collaboration} and E. Aprile and J. Aalbers and F. Agostini and M. Alfonsi and Amaro, {F. D.} and M. Anthony and Francesco Arneodo and P. Barrow and L. Baudis and B. Bauermeister and {Lotfi Benabderrhmane}, Mohamed and T. Berger and Breur, {P. A.} and A. Brown and E. Brown and S. Bruenner and G. Bruno and R. Budnik and A. Buss and L. B{\"u}tikofer and Cardoso, {J. M.R.} and M. Cervantes and D. Cichon and D. Coderre and Colijn, {A. P.} and J. Conrad and Cussonneau, {J. P.} and Decowski, {M. P.} and {De Perio}, P. and {Di Gangi}, P. and {Di Giovanni}, A. and E. Duchovni and Ferella, {A. D.} and A. Fieguth and D. Franco and W. Fulgione and M. Galloway and M. Garbini and C. Geis and Goetzke, {L. W.} and Z. Greene and C. Grignon and E. Gross and C. Hasterok and E. Hogenbirk and R. Itay and B. Kaminsky and G. Kessler and A. Kish and H. Landsman",
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    AU - XENON Collaboration

    AU - Aprile, E.

    AU - Aalbers, J.

    AU - Agostini, F.

    AU - Alfonsi, M.

    AU - Amaro, F. D.

    AU - Anthony, M.

    AU - Arneodo, Francesco

    AU - Barrow, P.

    AU - Baudis, L.

    AU - Bauermeister, B.

    AU - Lotfi Benabderrhmane, Mohamed

    AU - Berger, T.

    AU - Breur, P. A.

    AU - Brown, A.

    AU - Brown, E.

    AU - Bruenner, S.

    AU - Bruno, G.

    AU - Budnik, R.

    AU - Buss, A.

    AU - Bütikofer, L.

    AU - Cardoso, J. M.R.

    AU - Cervantes, M.

    AU - Cichon, D.

    AU - Coderre, D.

    AU - Colijn, A. P.

    AU - Conrad, J.

    AU - Cussonneau, J. P.

    AU - Decowski, M. P.

    AU - De Perio, P.

    AU - Di Gangi, P.

    AU - Di Giovanni, A.

    AU - Duchovni, E.

    AU - Ferella, A. D.

    AU - Fieguth, A.

    AU - Franco, D.

    AU - Fulgione, W.

    AU - Galloway, M.

    AU - Garbini, M.

    AU - Geis, C.

    AU - Goetzke, L. W.

    AU - Greene, Z.

    AU - Grignon, C.

    AU - Gross, E.

    AU - Hasterok, C.

    AU - Hogenbirk, E.

    AU - Itay, R.

    AU - Kaminsky, B.

    AU - Kessler, G.

    AU - Kish, A.

    AU - Landsman, H.

    PY - 2016/11/3

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    N2 - We perform a low-mass dark matter search using an exposure of 30 kg×yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 keV for nuclear recoils. No dark matter detection can be claimed because a complete background model cannot be constructed without a primary scintillation signal. Instead, we compute an upper limit on the WIMP-nucleon scattering cross section under the assumption that every event passing our selection criteria could be a signal event. Using an energy interval from 0.7 keV to 9.1 keV, we derive a limit on the spin-independent WIMP-nucleon cross section that excludes WIMPs with a mass of 6 GeV/c2 above 1.4×10-41 cm2 at 90% confidence level.

    AB - We perform a low-mass dark matter search using an exposure of 30 kg×yr with the XENON100 detector. By dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 keV for nuclear recoils. No dark matter detection can be claimed because a complete background model cannot be constructed without a primary scintillation signal. Instead, we compute an upper limit on the WIMP-nucleon scattering cross section under the assumption that every event passing our selection criteria could be a signal event. Using an energy interval from 0.7 keV to 9.1 keV, we derive a limit on the spin-independent WIMP-nucleon cross section that excludes WIMPs with a mass of 6 GeV/c2 above 1.4×10-41 cm2 at 90% confidence level.

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    U2 - 10.1103/PhysRevD.94.092001

    DO - 10.1103/PhysRevD.94.092001

    M3 - Article

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    JO - Physical Review D

    JF - Physical Review D

    SN - 2470-0010

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